Well, a mouse *is* stirring... And he's having fun playing with the toys, until he mistakes Tom for a stuffed toy and wakes him up.
The short three-minute fragment from series is a 1941 one-reel animated cartoon and is the 3rd Tom and Jerry short directed by William Hanna and Joseph Barbera, produced by Fred Quimby and animated by Jack Zander, George Gordon, Irven Spence and Bill Littlejohn.